The FriXion Ball 4 multi pen has a cool, modern look, featuring a subtle geometric dot pattern on its shiny pen body. This retractable multi pen contains Pilot's popular FriXion inks in four colors: black, blue, green, and red. The thermosensitive ink can be erased by using the special rubber "eraser" at the end of the pen. The pen has a rubber grip for comfortable writing, as well as a spring-loaded clip to conveniently attach to your pocket or notebook cover. Refills are available.

FriXion ink is a thermosensitive ink that can be erased by rubbing. Interestingly, erased ink reappears at temperatures below 14° F (-10° C). A freezer is cold enough to make this happen. Due to the thermosensitive nature of FriXion ink, we advise against using it for mailings, or leaving the written materials in hot cars or in environments that expose them to a lot of friction.

Q: My Pilot FriXion pen is not writing well. It seems to be dried out or writing with clear ink. What should I do?

The FriXion ink formula is thermo-sensitive, which causes it to become invisible when heat from friction is applied. If the pen has been exposed to warm temperatures or direct sunlight, this may have caused the ink inside the pen to be "erased." Please try to store the pens in your freezer overnight, then remove them for an hour or two prior to writing to allow them to come back to room temperature. This can usually reactivate the coloring in the ink and allow the pens to write as normal.

I have to write up handwritten reports a few times a week without making too
many errors. Well, sometimes that just doesn't happen. I discovered the single
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other teachers I work with. The rest was history. We all now share a new
addiction together.This particular brand was the greatest ink pen to erase
clean. It does a beautiful job. I have researched erasable pens for years. This
is far the best I have researched. Much to my surprise this came is a four gel.A
marvelous treat. This pen alone has kept me on the Jet Pens circuit.